<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body>
    <script>
      // 原型终点
      // Object.prototype.__proto__ === null;
      // Object.prototype = {
      //   __proto__: null,
      // };
      // function Object() {
      //   this={};
      //   this.__proto__=Object.prototype
      //   return this
      // }
      const obj = {}; // new Object();
      console.log(obj.__proto__ == Object.prototype); //true
      console.log(obj.age);
    </script>
  </body>
</html>
